dev-lang/perl conflict

I started to look at Funto project ( an other version of Gentoo) and I met a problem during update :


WARNING: One or more updates have been skipped due to a dependency conflict:

dev-lang/perl:0

  (dev-lang/perl-5.18.2-r1::gentoo, ebuild scheduled for merge) conflicts with
    =dev-lang/perl-5.16* required by (virtual/perl-Perl-OSType-1.2.0-r1::gentoo, installed)


To solve this problem, I ran the following commands :

emerge -1auD $(qlist -IC 'virtual/perl-*')
perl-cleaner --all

See also forum Gentoo



Note :

When I executed emerge command, it appears a problem with the following package : app-text/rarian. I will look at this problem later.

 * Messages for package app-text/rarian-0.8.1-r2:

 * ERROR: app-text/rarian-0.8.1-r2 failed (compile phase):
 *   emake failed
 *
 * If you need support, post the output of `emerge --info '=app-text/rarian-0.8.1-r2'`,
 * the complete build log and the output of `emerge -pqv '=app-text/rarian-0.8.1-r2'`.
 * The complete build log is located at '/var/tmp/portage/app-text/rarian-0.8.1-r2/temp/build.log'.
 * The ebuild environment file is located at '/var/tmp/portage/app-text/rarian-0.8.1-r2/temp/environment'.
 * Working directory: '/var/tmp/portage/app-text/rarian-0.8.1-r2/work/rarian-0.8.1'
 * S: '/var/tmp/portage/app-text/rarian-0.8.1-r2/work/rarian-0.8.1'

 * Regenerating GNU info directory index...
 * Processed 109 info files.